'round it down' is a bit confusing.
Basically, though, you first need to set a seed if your perl is before
v 5.004 (If you don't, you'll get random numbers, but everytime you
run the program, you could

Basically, though, you first need to set a seed if your perl is before
v 5.004 (If you don't, you'll get random numbers, but everytime you
run the program, you could get about the same random numbers). Just
to be safe, then

srand( time ^ $$ );

(There are many quibbles that the above might not be random enough.
Chances are, it is. If not, go to www.perl.com and search for
TrulyRandom)

I would prefer ( time + $$ ) as a seed over ( time ^ $$ )
If $$ has a tendancy to be increasing, it could be easy for ( time ^ $$ ) to be tha same on subsequent runs.
(Using 5.004 may be even more preferred)

That requires that $$ is increasing at about the same rate as is time,
so $$ is approximately uniformly (approximately uniformly? Mea culpa,
mea maxima culpa) increasing by 1 per second. If I remember my
combinatorics correctly (backed up by the perldoc page on srand) that
_still_ gives a 1 in 3 chance of being identical, nu? So if you're on
a machine that is averaging 1 pid per second (no more, no less), then
you've a 1 in 3 chance of problems. If one's that worried about it,
best go to TrulyRandom, or, my all time favorite, make use ofhttp://lavarand.sgi.com

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